Ventilator.



T. H. GARLAND.-

VENTILATOB.

.PPLIGATIONVHLBD 11u22, 1911.

Patented sept. 10,1912'.

'space to be THOMAS H. GARLAND, OF CHIGAG, ILLNOIS.

vEN'rrLA'ron.

incasso.

Specicaton of Letters Patent.

Application filed May 22, 1911. Serial No. 628,755.

To ali whom 'it may concern:

Be it knov. n that l, Tnoauiis li. GARLAND, a citizen of the United States, residing at Chicago, in the. county of Cook and State of illinois, have invented certain new and useful. `Improvements in Tvrenlilators, of which the folhiwing is -a specification.

The present` invention relates to exhaust ventilaors and more particularly to ventilators without moving parts which draw ofi' the air from rooms, cars, or other confined spaces by the action of air currents upon the exterior of the. ventilator. l

The present invention is a modification of that disclosed in my prior Patent No. 904,125, granted November 17, 1905.

One object of the invention is to provide a.ventilator of the class referred to, which will effectively draw out the airfrom the ventilated without admitting,` outside air through the, ventilator; another object is to provide a sensitive device-that is to say, one which will produce a ventilating action upon the slightest action of the external air upon it; and a third object is to provide a device which may be readily and cheaply manufactured.

In earryingoT out my invention, i preferably provide a central chambe'ig'or chan bers, which are in communication with the space to be ventilated-and from which lateral openings communicate with transverse channels which are formed by walls extendinn` the full height of the chamber and which have deliecting members within them. I also preferably allow the top and bottom plates, between which the several walls of the device extend, to overhang the other parts so as to provide channels for the passage of the air upon the sides and ends of the device. These various features, however, will be best understood upon reference to the following detailed description taken in connection with the accompanying` drawing, and the scope of the invention will be particularly pointed out in the appended claims.

In the drawing', Figure 1'is an elevation of the preferred embodiment of my invention; Fin'. 2 is a central horizontal section of the same; and Figi. 53 is a. central vertical section of a modified form of the invention, which dill'ers from the preferred embodiment only in hayinpj a single central chamber instead of a plurality of chambers. Throughout these figures, like characters refer to like parts'.

'ends 14, 15 of the walls 12,

i and bottom plates 10 and 11. These Referring to the drawing in detail, 1() designates t-he top plate of the ventilator, and 11 the bottom plate. These plates are composed of any suitable material such as sheet metal and, in the forms of the invention illustrated, are of equal size. Platel'l, however, is provided Vwith a central= inlet opening formed by cutting out a portion of the center of the plate. Walls 12, 13 extend between the plates 10 and 11 and form the ends and sides of a central chamber, or chambers, having lateral openings between the deflected ends 14, 15. The space .within the walls 12, 13 may be left in asingle chamber, as illustrated in Fig. 1, or divided into two chambers by a partition 16, as illustrated in Fia'. 2. This partition, like the walls, extends between the plates 10 and 11. In some classes of service, it may be desirable to use this partition, and in others not. Its function, when used, is to ,prevent the exhaust' on one side of the ventilator from pulling air through the openings on the opposite side, instead of from the space to be ventilated. This might occur with certain directions of the wind, or in other conditions of service. When put in positionfor use, the chamber, or chambers, within the walls 13 communicate with the space to be ventilated. This communication' may be established in any suitable way.

ln the particular embodiments illustrated, 17 designates the wall or ceiling of a'room, car, or the like, which is to be ventilated, and 18 is an' opening therein by which cominunication is established with the chamber, or chambers, of the ventilator.

lTheoutlet openings between the deflected 13, communicate with channels, or passages, formeel by walls 19, which also extend between the plates 10 and 11. These walls are preferably provided with an outward distention, as illus trated, which forms an increased width of channel opposite the outlet openings. In addition to the walls 12, 13 and 19, the ventilator is also provided with short walls 20, 21, whichl likewise extend between the top walls, like the walls 12 and 13, are provided with deflected ends 22, 23, which are preferably parallel to the deflected ends 141,15, and, like the latter, extend at right angles to the main portions of the walls of which they are' parts. These several deflected ends,

latented Sept. 10,1912.

therefore, extend at right angles to the axis of n 1G, may be soltiered together attheir joints, or secured in any other suitablemanner.

ln operation, the ventilator is preferably placed so that the exterior air will strike the outwardly curved portion of one of the walls i9. For example, it the deilector be used upon a railway coach, it would be positioned so as to bring' the curved portions of `the walls "i9 lengthwise ot the coach. When so positioned, the air, striking the wall 19, will/bc deflected around the ends of the wall and pass along the ends of the channels and, in so doing, will produce the well known .inductive action by which the substantial ilow of air fromthe space to be ventilated, through the central chamber` or chambers, and the channels to the outside, will be establishedn When the Ventilator is positioned at right angles to the position just considered, that is, with its channels in line with the direction of the exterior currents of air, then the passage of the air through the channels formed by the walls i2, 13,'19, 20, 2l, is abruptly deflected away from the openings into the chamber, or chambers.r by eneoinr tering the deflected ends Sie. l5, 22 and Q3. This outward deilection of the air currents in their passage through the channels tends to cause a. Vacuum between the ends lll and 15, which induces astrong exhaust or air from the space to be ventilated to the ontside. c

It will be apparent that in carrying ont my invention, certain alterations and modi ications may be inade in the size and arrangement oic the parts and their relative dimensions without departing from the spirit and scope oit the inrention. l, therefore, do not wish to be limited to the speciiic disclosin'e contained herein, lbut aim to cover all such alterations and modifications by the terms of the appended claims.

What l: claim as new and desire to secure by Letters Patent oi2 the United States iszl. A ventilator comprising substantially parallel upper and lower plates, the latter having a central opening adapted to communicate with the space to be ventilated: walls extending between said plates and forming a central-chamber over said openi ing and having lateral openings in opposite` sldes; and walls extending between said plates at opposite: sides of said chamber and forming vwith the adjacent walls. ot said chamber two channels respectively before said ripper and lower said chamber and chair sides and ends ot' the ig substainialliy noemer,

parallel upper and lower plates, the latter having a central opening` adapted to Ycoin'- inunieale with the space to be ventilated; walls extending` between said plates and forming a central chaniber over said Opening and having lateral openings in opposite sides; and walls extendingr between said plates at opposite sides ofisaid chamber and forming with the adjacent walls of said chamber'- two channels passing respectively before said openings; said upper and lower plates over-hanging the said chamber and channel wallsl at the ends of the said two channels passing before the lateral openings.

3. A ventilator comprising substantially parallel upper and lower plates, the latter haring a central opening adapted to comnninicate with the space to be ventilated; walls extending,a between said plates and forming a central chamber over said opening and having lateral oi'ienings in its opposite sides; a partition in lsaid chamber positioned with said lateral openings on either sido; and walls extending between said plates at opposite sides of said chamber and forming; with the adjacent walls of said chamber two channels passing respectively before `said lateral openings, said chamber walls having deflected portions for deilecting the currents or air in said channels andv toward said outer walls and the latter being outwardly distcnded at points opposite said detlccting portions.

4. A, ventilator comprising a central chamber having an opening adapted to communicate with the space to be ventilated and oppositely disposed lateral openings; a partition in said chamber positioned with the said lateral openings on either side-Ia. and channels on either side of said chamber passing said lateral openings and being diverted outwardly away fromv said lateral openings at the points where they pass the same.

5. 1i. ventilator comprising substantially parallel. upper and lower plates7 the latter having a central opening adapted to communicate with the space to be ventilated;l walls extending between said plates and forming a central chamber over said opening and having lateral openings in its opposite sides; walls extending between said plates at opposite sides of said chamber and forming withthe adjacent walls of said chamber two channels passing respectively before said lateral openings, said chamber walls having delecting' portions for deflecting the currents of air lin said channels toward said outer walls and the latter being outwardly deflected at points opposite said deliecting" portions; and intermediate walls located in the ends 01"' said channels and having delleoting; portions to deflect the air to ward said outer walls.

parallel upper and lower plates, the latter having a central opening adapted to communicate with the space to be ventilated; Walls extending between. said plates and lforming a central chamber over said opening and having lateral openings in its oppo- I Asite sides; a partition in said chamber positioned With said .,ateral openings on either side; walls extending between said plates at opposite sides ofrsaid chamber and forming with the adjacent walls of said chamber two channels passing respectively before said lateral openings, said chamber walls having defleeting portions for deflecting-the currents of air in said channels toward said outer walls and the latter being outwardly defiected at points opposite said defleeting portions; and intermediate walls located in the ends of said ,channels and having defle'cting portions to deflect the air toward said outer walls.

7. A Ventilator comprising a central chamber having an opening 4adapted to communi c'ate with the space to be ventilated and oppositely disposed lateral openings; channels on either side of said chamber passing said lateral openings and being diverted outwardly away from said lateral openings at the points where they pass the same; and means in the ends of said channels for increasing the outward diversion of the air flowing through said channels.

8. A ventilator comprisingv a central chamber having an opening adapted to communicate with the space to bev ventilated and oppositely disposed lateral openings; a partition in said chamber positioned with the said lateral openings on either side; channels on either side of said chamber passing said lateral openings and being diverted Voutwardly away from said lateral openings at the points where they p ass the same, and means in the ends of said channels for increasing the outward diversion of the air ilowing through said channels.

my name this 19th day of May, A. D., 1911.

THOMAS H. GARLAND. Y

Witnesses:

L. M. ANDREW, D. J. NORMOYLE.

'In witness whereof, I hereunto subscribe 

